/**
 * shopcart模块的小仓库
 */
import {
  reqGetCartList,
  reqDeleteCartById,
  reqUpdateCheckedByid,
} from "../../api";
const state = {
  cartList: [],
};

const mutations = {
  GETCARTLIST(state, cartList) {
    state.cartList = cartList;
  },
};

const actions = {
  //获取购物车列表数据
  async getCartList({ commit }) {
    let result = await reqGetCartList();
    if (result.code == 200) {
      commit("GETCARTLIST", result.data);
    }
  },
  //删除购物车某一个产品
  async deleteCartListBySkuId({ commit }, skuId) {
    let result = await reqDeleteCartById(skuId);
    if (result.code == 200) {
      return "ok";
    } else {
      return Promise.reject(new Error("faile"));
    }
  },
  //修改购物车某一个产品的选中状态
  async updateCheckedById({ commit }, { skuId, isChecked }) {
    let result = await reqUpdateCheckedByid(skuId, isChecked);
    if (result.code == 200) {
      return "ok";
    } else {
      return Promise.reject(new Error("faile"));
    }
  },
  //删除全部勾选的产品
  deleteAllCheckedCart({ dispatch, getters }) {
    //context：小仓库，commit【提交mutation修改state】 getters【计算属性】 dispatch【派发action】 state【当前仓库数据】
    //获取购物车中全部的产品（一个数组）\
    let promiseAll = [];
    getters.cartList.cartInfoList.forEach((item) => {
      let promise =
        item.isChecked == 1
          ? dispatch("deleteCartListBySkuId", item.skuId)
          : "";
      //将每次返回的Promise添加到数组当中
      promiseAll.push(promise);
    });
    //只要全部的p1|p1...都成功，返回结构即为成功，如果有一个失败，返回结果即失败
    return Promise.all(promiseAll);
  },
  //修改全部产品的状态
  updateAllCartIsChecked({ dispatch, state }, isChecked) {
    let promiseAll = [];
    state.cartList[0].cartInfoList.forEach((item) => {
      let promise = dispatch("updateCheckedById", {
        skuId: item.skuId,
        isChecked,
      });
      promiseAll.push(promise);
    });

    //最终返回的结果
    return Promise.all(promiseAll);
  },
};

const getters = {
  cartList(state) {
    return state.cartList[0] || {};
  },
};

export default {
  state,
  mutations,
  actions,
  getters,
};
